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(No Model.) 2 Sheets-Sheet 1.

W. F. DIAL. Machine for Clinching Split Rivets. I

No. 240,393. I Patented April 19,188l.

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(No Model.) 2 SheetsSheet 2.

W. F. DIAL; Machine for Olinohing' Split Rivets No. 240,393. Patented April 19,1881.

TVilrwmes [72 V6 ml??? UNITED STATES PATENT OFFICE,

WILBUR FISKE DIAL, OF MONTREAL, QUEBEC, CANADA, ASSIGNOR TO LUOIUS HENRY PACKARD, OF SAME PLACE.

MACHINE FOR C LINCHING SPLIT, RIVETS.

SPECIFICATION forming part of Letters Patent No. 240,393, dated April 19, 1881.

Application filed March 8, 1881. (No model.)

To all whom it may concern Be it known that I,W1LEiiR FIsKE DIAL, of the city and district of Montreal, Province of Quebec, Canada, have invented certain new and useful Improvements in Machines for Olinching Split Rivets; and I do hereby declare that the following is a full, clear, and exact description of the same.

This invention relates to the improved construction and arrangement of a machine by which split rivets and similar fasteners are first driven into the material in which they are employed, and are afterward clinched, but not as in two separate operations, but in one continuous operation, in which the one takes place before or at the latter part of the other.

In the drawings hereunto annexed similar letters of reference indicate like parts, and Figure l is a side elevation of a machine embodying my invention. Fig. 2 is a front view of the working parts. Figs. 3 and 4 are de tails.

Letter A is any suitable frame-work for holdin g or attaching the working or actuatingparts upon. This is preferably provided with a base, B, for attachment to any desired stand or bench. The frame A is provided with two eyes, 0 and D, for holding an upright plunger, which consists of two spindles, E and F, and thus forms a vertical guide to the spindles. The spindle E is provided with a lower extremity, G, which enters into a corresponding recess, H, formed in .the upper end of the spindle F, closely fitting, yet freely sliding, within the same. The extremity G of the spindle F is made somewhat shorter than the recess H, to leave room for a spiral or other spring, I. In the side of the recess H a slot, K, is formed, and in G a pin, L, is inserted, thus governing the amount that G can slide. in one direction in the recess H. To the top of the spindle E are attached side links, IVI, by which said spindle is connected with a lever, N, fulcrumed by a pivot-pin, 0, to the frame A, as shown. This lever and frame are preferably provided with projections P, to govern the amount that it lifts the spindles E and F. Its back extremity is preferably attached to any ordinary treadle and counter-balance, arranged so that when the foot of the operator is placed upon the treadle and it is pressed down the back end of the lever N is caused to rise and the spindles E and F caused to descend. I have not shown this treadle in the drawings, because it does not form any part of my invention. Neither is necessary to the operation of the invention that the form of treadles above described should be employed to operate my invention, as many other equivalent contrivances could be arranged toimpart to the spin- 6o dles E and F the necessary vertical motionsuch, for example, as a crank and connectingrod.

Returning to the spindle F, its lower extremity is provided, as shown, with a punchshaped end, Z, which is concaved or cupped on its lower surface a sufficient amount so that it will be adapted for use with .either flat or convex headed rivets.

In the projection forming the eye D a secend eye is formed, through which the spindle R passes. This spindle is situated exactly parallel with E and F. It is furthermore supported and guided in its travel up and down with the spindles E and F by a collar, S, secured on the spindle F, and having forked projections T, which embrace between them or straddle the spindle R.

V is a collar secured on R, and so situated that before the spindles E and F have reached the upper extremity of their stroke the said collar comes in contact with the eye D and prevents the spindle R from rising an equal amount. X is a safety-collar secured on spindle R, to cause that spindle to rise with the upward stroke of E and F.

On the spindle E is secured a collar, A, havin gforked projections similar to those described for the collar S; but in this case one of them is provided with an inclined surface, B, which 0 engages with a pin, 0, secured on the spindle It, so that when the spindles E and F are depressed and come in contact with resistance caused by a rivet being placed below the punch end, and therefore causing G to pass into H to its utmost extremity, so that the shoulder D comes in contact with the upper surface of F or extremity of spindle F while this is being done, the incline B, acting upon the pin G, causes the spindle R to revolve the required amount to cause the foot-plate F, secured, as shown, on the lower part of spindle R, to turn on one side and be removed from under the end Z, so that it will be at least a little more than completely clear.

G is an ordinary clinching-die, of the configuration so clearly shown as to require no further explanation.

In Fig. 4 a plan of the foot F is shown. It is provided with an opening, H, in which the rivet to be driven and clinched in the material is placed, and when the machine is in the position shown in Figs. 1 and 2 the position of the parts is such that the rivet will be situated immediately under the end Z, the foot F being adjusted to such a distance below Z that the rivet may be freely slipped into its place by hand.

As shown in the drawings, there are also the spring 1, spring K, safety-cam projection, and pin, the use and intention of which will be fully understood by the further explanations of the operation of the invention which I am now about to give.

The rivet to be clinched having been placed in the opening H of the foot F, and the material into which it is to be clinched having been placed in the desired position upon the die G, the working 'or actuating parts are now operated to cause the spindles E, F, and R to descend, and as the rivet is carried in the foot F it descends until its ends rest upon the material.

It was hereinbefore mentioned that the collar V prevented the spindle B rising an equal amount with the spindles E and F. This has a double effect. In the first place it gives room for the introduction of the rivet into the opening H, and afterward, as soon as the spindles E and F have traveled downward the amount of space between Z and F with the intervening head of the rivet, the rivet is griped between them. This is caused by the action of the spring K, which is sufficiently strong not only to carry the weight of the spindle R and parts attached, and, furthermore, to overcome the friction to which this said spindle is subjected, but also to furtherpress it up and cause the foot F to press and gripe the head of the rivet and against the end Z. In this secure manner, therefore, the rivet is carried down until it reaches the material. Upon the rivet striking the material the spindle F becomes stationary, the spring I not being sufficiently strong to force it into the material. The spin- (lle E, continuing its descent, causes the incline B to act upon the pin G, causing the spindle R to rotate and withdraw or more properly turn the foot F from under the end Z, having the rivet griped between Z and the material. This operation being completed and the motion of the spindle E downward being continued, the shoulder D comes in contact with the surface E, and the motion becomes positive and drives home the rivet and clinches it. In the return or up stroke of the spindles E and F, as the incline rises the spring 1 causes the spindle R to again rotate and return the foot F to its proper position under the end Z, ready to receive the next rivet.

The projection L is provided for safety in case of any disarrangement of the pin 0 or incline B, so that the spindle B may be rotated by the pin 0 coming in contact with the incline P formed upon it.

What I claim as my invention, and wish to secure by Letters Patent, is as follows:

1. The combination of the spindle E, having extension G, and spindle F, having recess II and end Z, constructed and arranged substantially as described, and having the spring I situated between them, with the removingfoot F and clinching-die G, substantially as set forth.

2. The combination ofthe spindle E, having extension G, and further provided with a projection having incline B, spindle F, having recess H and spring I and end H, as described, spindle B, having pin 0, collar V, and foot F, springs I and K, and die G, the whole constructed, arranged, and operated substantially as set forth.

W. F. DIAL.

Witnesses:

CHARLES G. O. SIMPsoN, THS. D. VAILLANCOURT. 

